1 /*
2 * Check decoding of sockname family syscalls.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "tests.h"
31 #include <stddef.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <signal.h>
35 #include <unistd.h>
36 #include <sys/wait.h>
37 #include <sys/socket.h>
38 #include <sys/un.h>
39
40 #ifndef TEST_SYSCALL_NAME
41 # error TEST_SYSCALL_NAME must be defined
42 #endif
43
44 #define TEST_SYSCALL_STR__(a) #a
45 #define TEST_SYSCALL_STR_(a) TEST_SYSCALL_STR__(a)
46 #define TEST_SYSCALL_STR TEST_SYSCALL_STR_(TEST_SYSCALL_NAME)
47 #define TEST_SOCKET TEST_SYSCALL_STR ".socket"
48
49 #ifdef TEST_SYSCALL_PREPARE
50 # define PREPARE_TEST_SYSCALL_INVOCATION do { TEST_SYSCALL_PREPARE; } while (0)
51 #else
52 # define PREPARE_TEST_SYSCALL_INVOCATION do {} while (0)
53 #endif
54
55 #ifndef PREFIX_S_ARGS
56 # define PREFIX_S_ARGS
57 #endif
58 #ifndef PREFIX_F_ARGS
59 # define PREFIX_F_ARGS
60 #endif
61 #ifndef PREFIX_S_STR
62 # define PREFIX_S_STR ""
63 #endif
64 #ifndef PREFIX_F_STR
65 # define PREFIX_F_STR ""
66 #endif
67 #ifndef SUFFIX_ARGS
68 # define SUFFIX_ARGS
69 #endif
70 #ifndef SUFFIX_STR
71 # define SUFFIX_STR ""
72 #endif
73
74 static void
test_sockname_syscall(const int fd)75 test_sockname_syscall(const int fd)
76 {
77 socklen_t *const plen = tail_alloc(sizeof(*plen));
78 *plen = sizeof(struct sockaddr_un);
79 struct sockaddr_un *addr = tail_alloc(*plen);
80
81 PREPARE_TEST_SYSCALL_INVOCATION;
82 int rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr,
83 plen SUFFIX_ARGS);
84 if (rc < 0)
85 perror_msg_and_skip(TEST_SYSCALL_STR);
86 printf("%s(%d%s, {sa_family=AF_UNIX, sun_path=\"%s\"}"
87 ", [%d->%d]%s) = %d\n",
88 TEST_SYSCALL_STR, fd, PREFIX_S_STR, addr->sun_path,
89 (int) sizeof(struct sockaddr_un), (int) *plen, SUFFIX_STR, rc);
90
91 memset(addr, 0, sizeof(*addr));
92 PREPARE_TEST_SYSCALL_INVOCATION;
93 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr,
94 plen SUFFIX_ARGS);
95 if (rc < 0)
96 perror_msg_and_skip(TEST_SYSCALL_STR);
97 printf("%s(%d%s, {sa_family=AF_UNIX, sun_path=\"%s\"}"
98 ", [%d]%s) = %d\n",
99 TEST_SYSCALL_STR, fd, PREFIX_S_STR, addr->sun_path,
100 (int) *plen, SUFFIX_STR, rc);
101
102 PREPARE_TEST_SYSCALL_INVOCATION;
103 rc = TEST_SYSCALL_NAME(fd PREFIX_F_ARGS, (void *) addr, 0 SUFFIX_ARGS);
104 printf("%s(%d%s, %p, NULL%s) = %s\n",
105 TEST_SYSCALL_STR, fd, PREFIX_F_STR, addr, SUFFIX_STR,
106 sprintrc(rc));
107
108 PREPARE_TEST_SYSCALL_INVOCATION;
109 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, 0, 0 SUFFIX_ARGS);
110 printf("%s(%d%s, NULL, NULL%s) = %s\n",
111 TEST_SYSCALL_STR, fd, rc == -1 ? PREFIX_F_STR : PREFIX_S_STR,
112 SUFFIX_STR, sprintrc(rc));
113
114 PREPARE_TEST_SYSCALL_INVOCATION;
115 rc = TEST_SYSCALL_NAME(fd PREFIX_F_ARGS, (void *) addr,
116 plen + 1 SUFFIX_ARGS);
117 printf("%s(%d%s, %p, %p%s) = %s\n",
118 TEST_SYSCALL_STR, fd, PREFIX_F_STR, addr,
119 plen + 1, SUFFIX_STR, sprintrc(rc));
120
121 const size_t offsetof_sun_path = offsetof(struct sockaddr_un, sun_path);
122 *plen = offsetof_sun_path;
123 memset(addr->sun_path, 'A', sizeof(addr->sun_path));
124
125 PREPARE_TEST_SYSCALL_INVOCATION;
126 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr,
127 plen SUFFIX_ARGS);
128 if (rc < 0)
129 perror_msg_and_skip(TEST_SYSCALL_STR);
130 printf("%s(%d%s, {sa_family=AF_UNIX}, [%d->%d]%s) = %d\n",
131 TEST_SYSCALL_STR, fd, PREFIX_S_STR,
132 (int) offsetof_sun_path, (int) *plen, SUFFIX_STR, rc);
133
134 ++addr;
135 *plen = sizeof(struct sockaddr);
136 addr = (void *) addr - *plen;
137
138 PREPARE_TEST_SYSCALL_INVOCATION;
139 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr,
140 plen SUFFIX_ARGS);
141 if (rc < 0)
142 perror_msg_and_skip(TEST_SYSCALL_STR);
143 printf("%s(%d%s, {sa_family=AF_UNIX, sun_path=\"%.*s\"}"
144 ", [%d->%d]%s) = %d\n",
145 TEST_SYSCALL_STR, fd, PREFIX_S_STR,
146 (int) (sizeof(struct sockaddr) - offsetof_sun_path),
147 addr->sun_path, (int) sizeof(struct sockaddr),
148 (int) *plen, SUFFIX_STR, rc);
149
150 PREPARE_TEST_SYSCALL_INVOCATION;
151 rc = TEST_SYSCALL_NAME(fd PREFIX_F_ARGS, (void *) addr,
152 plen SUFFIX_ARGS);
153 printf("%s(%d%s, %p, [%d]%s) = %s\n",
154 TEST_SYSCALL_STR, fd, PREFIX_F_STR, addr,
155 *plen, SUFFIX_STR, sprintrc(rc));
156 }
157